Collapsible cot.



l. S. PURCELL.

COLLAPSIBLE COT. APPLICATION man JUNE4, 1917.

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l Patented. Apr. 15,1919.l

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l. s. PUHCELL.A

COLLAPSIBLE COT. I

APPucATloN min JUNE 4.1911.

1,3GO,872 l y PatentedApr.15,1919.

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I. S. PURCELL.

COLLAPSIBLE COT.

APPucATloN FILED JUNE 4.1917.

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' Patented Apr. 15,1919.

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ISAAC S. PURCELL', OF CHICAGO, ILLINOIS, ASSIGNOR T0 TENTOBED COMPNY, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

coLLArsIBLE cor.

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Specication ofLetters Patent. 4Ifa,*tainted Alun-15, V1919..

Application led .Tune 4,1917. Serial No. 172,597.

To all whom t may concern Beit known that I, IsAnc S. PURCELL, citi'- zen of the United States, residing, at Chicago, Illinois, have inventedcertain new and useful Improvements in Collapsible'Cots; and I do hereby declare the following' to be a full, clear, and exact description of the 1nvention, such as will enable others skilled 1n the art to which it appertains to makev and use the same. Y

My invention relatesto beds orcots of the kind adapted to be compacted into a relatively small space, its general objects being t0 provide a structure of this class which will ybe strong and rigid whenl erected, 1n

whichthe bed-bottom may readily be tightened or loosened, which may be quickly erected or disassembled, in which the number of tools for making the various parts will be reduced to a small number, which may readily be separated into a number of disconnected parts ywhen disassembled, and

in which certain of the parts may be used interchangpablyin a number of d1iferentpo-,-

sitions. ther and more detailed objects will appear from the following .specification and from the accompanying drawings, in which drawings Figure 1 is a plan view of the erected cot with the major portion of the bed-bottom fabric cut away.'

' Fig.` 2 is a side elevation of the same.

Fig. 3 is lan enlarged fragmentary end View of the same.

Fig. 4 is a fragmentary transverse section,

taken along the line 4-4 of Fig. 3. 4

Fig. 5 is an enlarged fragmentary transverse section, taken along the line 5-5 of Fig. 1. y

Fig. 6 is a perspective view of one of the punchings used for two different purposes as hereafter set forth.

Fig. 7 is a view of one of the side members of the cot when folded for shipment or storage. Y

Fig. 8 is a viewof the same, partly unfolded.

Fig. 9 is a view showing the method of securing the punching of Fig. .6`when the same is to be used as a st'op for certain parts of the cot frame.

Fig. 10 is a fragmentary perspective view of lone end of the end rails and of a portion -of the canvas or bed-bottom secured to the same.

To provide for compact storing and for a ready separation in case different portions of the cot are to be carried separately (as by boyscouts), I preferably construct the cot of my invention of seven' separate portions, each self-contained but arranged for attachment to other cot parts without the use of screws or auxiliaryfastenings of any kind. These seven parts are as follows:

Two side members, each comprising' a foldable side rail, together with three legs and a foldable brace 10 for each leg, as shown folded in Fig. 7 and partially unfolded in Fig. 8. Y v

A bed-bottom'member, comprising a bedbottom 1 of canvas or the like, end rails 2 and 3 secured to opposite ends of the bedbottom, and sockets 4 at the ends of the rails 2 and 3 for engagement with the tips of the side rails.

Also, threelspreader members, adapted interchangeablyto be interposed between any one of the three pairs of laterally opposed legs, and each comprising a spreader bai-5 equipped at each end with hooks 6 for engaging pins 7 on adjacent cot legs, and a legs than the pins folding braces l0 interposed,v

Each of the between a cot leg l1 and one of the side rails 12 has astop 13 for limiting a relative movement ofthe pivotally joined brace portions to a point just beyond an axial alinement of these portions, thus affording an effective stop after the manner long used with the braces for trunk lids and the like Each side rail is preferably formed of' two `portions 12A and 12B connected by "a pivot 14 disposed at a distance from the ends of both of these rail portions (as shown in Fig. 8) and one of these rail sections, and one of these sections' carries a pair of stop lugs ll5 both facing in the same direction. One of 100 these lugs (15A) is so positioned as to limit ers at each end of the cot frame. l also ,other end of the frame. Before makin about their pivot, while thel other .(151?) limits the folding movement to a position 1n which the rail sections aline alongside each other. For each of these stop lugs l preferably use a metal punching shown in perspective in Fig. 6, which punching is fastened to the wooden rail by a single bolt or rivet through the single perforation in the punchlng and is held from movelnent about this fastening as a pivot by the arm 16 of the I punching, which arm enters a slot cut inthe rail as shown in Fig. 9. l

To reduce the weight of the cot and to prevent the discomfort of handling metal parts in either hot or chilly weather, I preferably construct the frame primarily of wood. That is to say, I use well seasoned wood for the side rails, legs and end rails, but preferably reinforce the ,latter b means of angle steel bars extending for t eir Jentire length and stifl'ening the end rails against the strains im osed on them by the tensioning of the bedbottom when the cot is in use. Each of the side railsections 12A and 12B has a free end 17 projecting beyond the pivotal connection of the rail section to one of the legs 11,

thereby aording a projecting tip adapted to enter a metal socket 4 upon the adjacen-` end of one of the end rails, this socket being desirably integral with the angle steel reinforcement of the end rail and desirably constructed after the manner shown vin my copending application filed Dec. 8, 1916, as Serial No. 185789. With the end rails detachably secured to the side rails by the socket and end lug arrangement thus described, the cot frame can readily be erected as a firm structure before the end rails and the bed-bottom carried by the latter l(winch bottom is here shown as a single piece of canvas) is attached to the frame. lThen these end rails can readily be attached by first interengaging the socket tips of one of these rails with the projecting side rail tips at one end of the frame, then raising the side rail sections at the other end of the frame to shorten the distance between the opposite .side rail tips and enga ing the socket tips of the rail tips at the this may the other end rail wit last named connection, the free end rai lbe rotated one or more half turns to tighten or loosen the bed-bottom, so a's to provi e the desired amount oftautness or of sag in the latter.

To simplify the erecting and manufacture, I preferably construct the pivotal joints 14 so that the rail sections 12B will diverge slightly when unfolded (as shown in Fig. 1), thereby enabling me to use identical spreagpre erably construct the pivotal attachment of the intermediate legs 11 to the rail sections 12A in such a mannerthat these legs will dverge slightly, use the same length of spreader between these legs.

I claim as my invention:

1. In a cot, a side member including a pair of normally horizontal bars pivoted to each other intermediate of their ends, and stops associated with said bars for limiting the relative movement thereof to positions in each of which the bars aline horizontally with each other; each of the said stops consisting of a metal member havin a portion engaging one of the side member harsto prevent rotation upon the latter, and having another portion affording a ledge substantially in the plane of the lower edge of the said bar.

2. In a cot, a frame comprising apair of equivalent side members each consisting of -two pivotally interconnected bars, two legs carried by one bar and one leg carried by the other bar of each side member, end rails respectively joining the ends of the side members, braces detachably interposed respectively between the o posed pairs of legs, and means associated wlth the said pivotal connection of the bars and with the legs for permitting the braces to be used interchangeably between the laterally opposed legs of the frame.

3. fn a cot frame, the combination with a pair of laterally opposed legs and a spreader detachably secured to both legs, of a latch on each leg for maintaining the spreader in its said position, said latch comprising a metal member pivoted to the leg and equipped with a pair of ledges positioned respectively for engaging the spreader and an edge of the said leg.

e. fl combination latch and stop member for cot frames, comprising an integral metal member equipped near one end for pivotal mounting and at its other end withy a forwardly projecting ledge, and equipped at one side with a rearwardly projecting ledge, as and for the purpose described.

5. ln a cot frame, the combination with a pair of laterally opposed legs, of a spreader interposed therebetween, said legs and spreader equipped with relatively interengaging formations, braces pivoted to the spreader and respectively interengaged with said legs, and latches movably mounted on the legs and engaging the spreader to prevent accidental detachment of both the spreader and the braces from the legs.

6. A cot including two side rail members each equipped with legs and each having side rail tips projecting beyond the legs, a pair of end rails, and a bed-bottom stretched between the rails, the end rails having socket tip formations slidably engaging the said projecting rail tips.

cot constructed as per claim 6, in which the legs are piveted to the side rail thereby also enabling me t0 65 1,300,373 e :fa

members by pivot plates disposed to act as said tip of the side rail members, the pivot stops for the socket tip formations on the plates being disposed to afford stops for limend rails. Y r iting the said engagement of the end rail 10 8. In a cot frame, a side rail member, leg'- With the tip of the side rail member. 5 pivot plates fast upon said memberl but Signed at Chicago, May 31st, 1917.

spaced from the tip of the latter, and an end rail equipped with means for engaging the ISAAC AS. PURCELL. 

